My 87 yr old mo-in-law fell 2 mos ago. As a result, it was determined that several discs were almost touching. An ortho doc did a procedure to insert something between the discs to cushion them. While he was working, he found two holes in her bones in that lower back area. He did a biopsy then referred her to an onacologist for further testing. There is no cancer per blood tests. What could be going on?